alcohol

Alright so i figuered i would ask for some advice before i get discouraged, i've been at this for over 3 weeks (i know "not enough time") and have lost 2 pounds. This has never happend in the past, usually i see a bunch of water weight come right off, i mean 2 pounds in a month? ( sorry i just cant believe it)
The only thing i'm doing different is i stopped drinking alcohol, normal times i would drink atleast 4 bkttles of wine a week and some beer or hard liquor in there too. When i was dieting i would limit to 2 bottles a week.

Last year i lost 30 pounds
I gained back 10 (from vacations and holidays) (about 2 months)
The year before that i had lost about 10-15 gained about 5.
The reason i end up kind of giving up is during the summer i comute by bike to work (1 hour) and my weight loss would always stall at this point. (Tried limiting calories, upping them, not counting them) and eventually i would get discouraged and start adding a bottle of wine here and there .... and you knkw the rest.

Thats why this time i wanted to stop drinking. I drank on one night since then (my lowest weight was after) im now 185 - goal weight 145. (5"8)

I know, i should focus on how i feel, but i dont feel better. I feel bloated and grosse. Kind of depressed also. I starying taking vit d and omega 3 at the begining of the year. I don't have a thyroid problem.
So i had a theory that maybe since alcohol dehydrates you i'm holding onto water?urghhhh , im just trying to find a reason.